/*
 * Copyright 2021 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package cn.felord.dmn.kogito;


import org.kie.dmn.api.core.DMNRuntime;
import org.kie.kogito.KogitoGAV;
import org.kie.kogito.decision.DecisionModel;
import org.kie.kogito.decision.DecisionModels;
import org.kie.kogito.dmn.DmnDecisionModel;

import java.util.function.BiFunction;

public class SimpleDecisionModels implements DecisionModels {

    private final DMNRuntime dmnRuntime;
    private final BiFunction<DecisionModel, KogitoGAV, DecisionModel> decisionModelTransformer;
    private final KogitoGAV gav;


    public SimpleDecisionModels(DMNRuntime dmnRuntime) {
        this(dmnRuntime, (decisionModel, kogitoGAV) -> decisionModel);
    }

    public SimpleDecisionModels(DMNRuntime dmnRuntime, BiFunction<DecisionModel, KogitoGAV, DecisionModel> decisionModelTransformer) {
        this(dmnRuntime, KogitoGAV.EMPTY_GAV, decisionModelTransformer);
    }

    public SimpleDecisionModels(DMNRuntime dmnRuntime, KogitoGAV gav) {
        this(dmnRuntime, gav, (decisionModel, kogitoGAV) -> decisionModel);
    }

    public SimpleDecisionModels(DMNRuntime dmnRuntime,
                                KogitoGAV gav,
                                BiFunction<DecisionModel, KogitoGAV, DecisionModel> decisionModelTransformer) {
        if (dmnRuntime == null) {
            throw new IllegalArgumentException("dmnRuntime is null");
        }
        if (gav == null) {
            throw new IllegalArgumentException("gav is null");
        }
        if (decisionModelTransformer == null) {
            throw new IllegalArgumentException("decisionModelTransformer is null");
        }
        this.dmnRuntime = dmnRuntime;
        this.gav = gav;
        this.decisionModelTransformer = decisionModelTransformer;
    }

    @Override
    public DecisionModel getDecisionModel(String namespace, String name) {
        return decisionModelTransformer.apply(new DmnDecisionModel(dmnRuntime, namespace, name),gav);
    }
}
